Abstract:
Precipitation is a climatic variable influenced by global weather parameter like, sea surface
temperature from Pacific Ocean. Its effect in turn has an impact on crop production and other
precipitation related results (add reference). In this research work, we have studied the impact of
the El Niño-Southern Oscillation (ENSO) on surface temperature and precipitation over selected
regions of Upper Blue Nile. We applied Pearson correlation analysis on the precipitation and sea
surface temperature above the parts of Upper Blue Nile with monthly Climate Hazards Group
InfraRed Precipitation with Station data (CHIRPS) anomaly and from four ENSO regions over the
Equatorial Pacific Ocean. We have found that the Niño 4 region is a better matching region for the
selected location of the Upper Blue Nile out of the four ENSO regions in the equatorial Pacific
Ocean. Moreover, the Niño 4 region shows a negative correlation with precipitation and a positive
correlation with temperature over Upper Blue Nile. Further evaluations of the relationships between
precipitation and temperature with Niño 4 including the Atlantic oscillation, were conducted.
Precipitation and temperature are partially correlated with Niño 4 and the Atlantic oscillation
